The Man Who Died Twice (1958) | FILM NOIR/CRIME | FULL MOVIE

A nightclub singer loses her husband in an automobile accident, and soon afterward witnesses the murders of two narcotics agents, and suffers a nervous breakdown. The police come to believe that all three murders are related, as they had suspected her husband was involved in a heroin smuggling ring, and now they think she may have been involved in it, especially after they find a large stash of heroin hidden in her apartment.

IMDb: https://www.imdb.com/title/tt0051895/